Patents by Inventor Douglas Wayne Johnson

Douglas Wayne Johnson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6437935
    Abstract: A data zone optimization method and architecture for optimizing the location of the data zone on a data storage disk is disclosed. The data zone is preferably biased toward the outer diameter of the disk, and is referenced to a data zone starting location established proximate a load/unload ramp apparatus. An optimum starting location for the data zone of an initially unformatted data storage disk is preferably determined by contacting the load/unload ramp with the transducer assembly, disengaging the transducer assembly from the ramp, and writing servo information indicative of the data zone starting location at a disk location proximate the ramp and transducer assembly contact point. Servo information indicative of the data zone is written at inner diameter disk location with respect to the optimum data zone starting location. The optimized data zone architecture may have a predetermined or variable data storage capacity.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: August 20, 2002
    Assignee: International Business Machines Corporation
    Inventors: Douglas Wayne Johnson, Todd Phillip Fracek, Jeffrey Fred Boigenzahn
  • Patent number: 6215074
    Abstract: Disclosed is a disk drive for storing data which includes disks and an actuator mounted on a frame or first housing part. A second housing part, when joined with the first housing part, forms a disk enclosure. The disk enclosure includes rails which have openings therein for mounting the disk drive to the user frame of a computer system. Deformable inserts are placed into the openings in the rails and screws are passed through openings in the frame of the computer system and into the inserts in the openings in the rails of the disk drive. The inserts are more forgiving and result in less distortion than in a mounting system in which the screws are passed directly into tapped holes in the rails of the disk drive. The inserts also electrically insulate the disk drive from the user frame of the computer system.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: April 10, 2001
    Assignee: International Business Machines Corporation
    Inventors: Michael S. Good, Douglas Wayne Johnson, Subrahmanyan Nagarajan, Brian Lee Rappel, Laurence J. Schmidt, Dennis Ronald Ziegenhagen